兰州大学机构库研究单元: 化学化工学院http://ir.lzu.edu.cn:80/handle/262010/12018-11-20T00:53:07Z2018-11-20T00:53:07ZA Principled Understanding of Compliment Functions Based on a New Version of Brown and Levinson’s FaceWang, Yanghttp://ir.lzu.edu.cn:80/handle/262010/1981182018-10-31T07:11:50Z2018-10-29T08:41:54Z题名: A Principled Understanding of Compliment Functions Based on a New Version of Brown and Levinson’s Face
作者: Wang, Yang
摘要: No research (to our limited knowledge) has focused on or achieved a clear and principled understanding of the functions of compliment. The present paper, firstly, based on the definition of &ldquo;face&rdquo; by Brown and Levinson (1987), suggests a new version of their &ldquo;face&rdquo; (two universal concepts): negative need and positive need; secondly, with the help of the speech role classification by Halliday (2004), this paper puts forward a new theoretical model of human interaction (which has yielded new definitions of im/politeness); finally, the paper applies the new theoretical model of human interaction to the functions of compliment with an attempt to achieve a principled understanding of the functions.2018-10-29T08:41:54Z“十三五”中国高校图书馆工作的行动指南-学习《普通高等学校图书馆规程》的几点认识王勇http://ir.lzu.edu.cn:80/handle/262010/1981162018-10-30T03:49:42Z2018-10-09T09:26:59Z题名: “十三五”中国高校图书馆工作的行动指南-学习《普通高等学校图书馆规程》的几点认识
作者: 王勇
摘要: <div>
文章回顾了《普通高等学校图书馆规程》的修订历程，探讨了新《规程》的创新点及其对高校图书馆发展的现实指导意义。</div>
摘要: <div>
The paper reviews the revision process of&ldquo;Ｒules of the General Higher Education Library&rdquo;，and probes into the innovation points of the new rules and its practical guiding significance to the development of the university library.</div>2018-10-09T09:26:59Z新型服务能力建设视域下的高校图书馆学科服务思考王勇刘菁http://ir.lzu.edu.cn:80/handle/262010/1981152018-10-09T09:30:29Z2018-10-09T09:26:08Z题名: 新型服务能力建设视域下的高校图书馆学科服务思考
作者: 王勇; 刘菁
摘要: <div>
学科服务是高校图书馆发展的一种泛在服务形态，是服务功能新发展的标志。图书馆新型服务能力建设，不仅包括图书馆资源建设、队伍建设、空间建设、组织架构、文化理念等的转型与协同，而且包括传统信息服务职能的深化，即学科服务能力的培育。在新型学术环境和用户需求背景下，重新审视高校图书馆学科服务发展的驱动因素，对调整学科服务战略，促进用户深度参与，驱动多要素协同具有重要意义。</div>
摘要: <div>
Subject service is a ubiquitous service form in the development of university library，and a sign of the new development of library service function． The construction of the new library service ability，is not only the coordination and the transformation of library resource construction，team construction，space construction，organization structure and culture concept，but also the deepening of traditional information service functions，which means to cultivate discipline service ability． In the new environment and user needs of academic background，reexamining the driving factors in development of subject service in university library will play an important role in adjusting the subject service strategy，promoting the depth of user participation and driving multi－factor synergy．</div>2018-10-09T09:26:08ZOptimal configuration of a green product supply chain with guaranteed service time and emission constraintsHong, ZFDai, WLuh, HYang, CChttp://ir.lzu.edu.cn:80/handle/262010/1981142018-09-28T09:40:41Z2018-09-28T09:40:41Z题名: Optimal configuration of a green product supply chain with guaranteed service time and emission constraints
作者: Hong, ZF; Dai, W; Luh, H; Yang, CC
摘要: This paper studies a supply chain configuration (SCC) problem for a green product family in consideration of guaranteed service time and emission constraints. Several alternative options can be employed to implement the functions of each stage and safety inventory is adopted to satisfy stochastic demands. An SCC model is formulated to optimize the service time and option selection decisions to minimize the overall cost of the supply chain. The structural properties of the model are addressed and the problem is decomposed into two subproblems, namely, the service time decision problem and option selection problem. For the service time decision problem, the structural properties of the supply chain network is carefully studied, based on which a spanning tree-based algorithm (STA) is presented to solve the problem optimally. For the option selection problem that is proven to be NP-hard, a particle swarm optimization algorithm (PSO) is adopted to efficiently solve the problem. Consequently, a hybrid algorithm (STA+PSO) is developed to solve the SCC model. The numerical results show that the hybrid algorithm can efficiently and effectively solve the SCC model. The emission constraints on green products have significant effects on the supply chain cost and the emissions of the products; while the guaranteed service time also remarkably influences the supply chain configuration. (C) 2017 Elsevier B.V. All rights reserved.2018-09-28T09:40:41ZReview and bibliometric analysis of Chinese agricultural economics research: 2006-2015Chen, QHGeng, NZhu, Khttp://ir.lzu.edu.cn:80/handle/262010/1981132018-09-28T09:40:32Z2018-09-28T09:40:32Z题名: Review and bibliometric analysis of Chinese agricultural economics research: 2006-2015
作者: Chen, QH; Geng, N; Zhu, K
摘要: Purpose - The purpose of this paper is to reveal the distributional characteristics and evolutional patterns in source periodicals, topics, authors, funding, and institutes of research papers in Chinese Agricultural Economics so as to understand the current situations and developmental tendency of Chinese agricultural economics research over the past decade. Design/methodology/approach - Using the citation analysis method, this paper analyzed the distributional characteristics and evolution of source periodicals, fields, authors and topics of 2,203 highly cited journal papers from the database of China National Knowledge Infrastructure (CNKI) and 189 cited journal papers from database of Social Sciences Citation Index (SSCI) in agricultural economics first-authored by Chinese scholars from 2006 to 2015. Findings - First, over the past decade, agricultural economics research in China has seen a rapid development. Specially, 103 scholars and 42 institutes have played key roles in the development, and 12 Chinese periodicals and 3 international journals have been the most influential outlets. Second, the coverage of the topics in Chinese agricultural economics research is broad and has expanded over the past decade. The rural land issue has been the most popular topic, while the issues regarding rural institutional arrangements and industrialization in rural areas have been explored extensively. However, issues in other fields, such as agricultural markets and trade, rural labor, food safety, etc. have to be further studied. Third, the improvements of economic theory and quantitative analytic techniques, the supports from research funding, and an increase in the collaboration between Chinese scholars and those from other countries have made great contribution to the rapid development of Chinese agricultural economics research over the past decade. Originality/value - This paper is an original work that identifies the most influential journal papers including highly cited journal papers from CNKI and cited journal papers from SSCI, using citation frequency and standard Essential Science Indicators method. This is a contribution relative to the methods used by previous studies, which did not account for frequency of citation of a paper. Moreover, this study is based on data from two databases, CNKI and SSCI, suggesting that the coverage of sample papers is broader compared to those of previous studies.2018-09-28T09:40:32ZMicro-Study of the Evolution of Rural Settlement Patterns and Their Spatial Association with Water and Land Resources: A Case Study of Shandan County, ChinaMa, LBGuo, XDTian, YYWang, YLChen, MMhttp://ir.lzu.edu.cn:80/handle/262010/1981122018-09-28T09:40:21Z2018-09-28T09:40:21Z题名: Micro-Study of the Evolution of Rural Settlement Patterns and Their Spatial Association with Water and Land Resources: A Case Study of Shandan County, China
作者: Ma, LB; Guo, XD; Tian, YY; Wang, YL; Chen, MM
摘要: The balance between population and water and land resources is an important part of regional sustainable development. It is also significant for the ecological civilization in China and can help solve the Three Rural Issues (agriculture, countryside and farmers) in China. The Silk Road Economic Belt and Maritime Silk Road in twenty-first Century Strategy have brought new opportunities for the Hexi Corridor, which is facing challenges in the sustainable development of rural settlements. In this paper, we analyzed the temporal-spatial differentiation of rural settlement patterns in Shandan County of Hexi Corridor and studied the spatial association between rural settlements and water-land resources. Results show that the total area of rural settlement patches (CA), the number of rural settlement patches (NP), the mean patch area (MPS), the maximum patch areas (MAXP), the minimum patch areas (MINP) and the density of rural settlement patches (PD) changed more rapidly from 1998 to 2008 than from 2008 to 2015. In the second period, the indices mentioned before did not change significantly. The kernel density of rural settlements is basically consistent in three periods. Rural settlements mainly distribute along major roads and the hydrographic network and the kernel density of rural settlements decreases in the direction away from these roads and the hydrographic network. In addition, rural settlements in Shandan County are densely distributed in some regions and sparsely distributed in other regions. The dispersion degree of rural settlements increased from 1998 to 2008 and tended to be stable after 2008. These lead to the dispersion, hollowing and chaos of rural settlements in Shandan County. The spatial distribution of rural settlements in Shandan County is closely related to that of cultivated land and the hydrographic network. Our results might provide a theoretical basis for the reasonable utilization of water and land resources in Shandan County. Ultimately, a balance between population and water and land resources and regional sustainable development can be achieved.2018-09-28T09:40:21ZH-infinity control for a class of non-linear discrete-time networked systems with limited informationWang, YQZhang, SYhttp://ir.lzu.edu.cn:80/handle/262010/1981112018-09-28T09:40:12Z2018-09-28T09:40:12Z题名: H-infinity control for a class of non-linear discrete-time networked systems with limited information
作者: Wang, YQ; Zhang, SY
摘要: In this article, the problems of stabilization and H-infinity control are investigated for a class of non-linear networked systems with packet dropouts, network-induced delays and sensor faults. We construct a novel model by taking packet dropouts, distributed delays and sensor faults into account in a unified way. The packet dropouts process is modelled as a Markov chain taking values in a finite state space. Network-induced delays with distributed characteristics are divided into two intervals satisfying the Bernoulli random distribution. Sensor faults are described as stochastic variables and each sensor has different fault rate and independent of others. The resulting closed-loop system is converted into a Markov switching system. A mode-dependent controller is designed such that the closed-loop system is stochastically stable and satisfies H-infinity disturbance attenuation level in terms of certain linear matrix inequalities. Finally, a numerical example is given to illustrate the usefulness of the developed method in this article.2018-09-28T09:40:12ZAnalysis of the Influencing Factors of Migrant Worker Social Insurance in LanzhouZong, XLGuan, XGao, YChen, ZLZhang, GXhttp://ir.lzu.edu.cn:80/handle/262010/1981102018-09-28T09:40:02Z2018-09-28T09:40:02Z题名: Analysis of the Influencing Factors of Migrant Worker Social Insurance in Lanzhou
作者: Zong, XL; Guan, X; Gao, Y; Chen, ZL; Zhang, GX
摘要: There is no clear answer in academic world about whether to establish a social security system for migrant worker, and if doing so, whether it will influence the enterprises-competitiveness. Migrant worker has been contributing a lot for the urban construction, but it is also a vulnerable group, so the research in social security system for migrant worker is an inevitable problem. How to protect and guarantee the interests of the migrant workers become the social problem needed to be solved immediately nowadays. Based on the investigation about the situation of migrant worker's social insurance in Lanzhou and applying the Logistic regression model to analyze the influence factors of migrant worker's participation in social insurance in Lanzhou. This article proposes some suggestions about establishing a national electronic information files for migrant workers and transforming of the advertisement methods of the government.2018-09-28T09:40:02ZMatheuristic for a two-echelon capacitated vehicle routing problem with environmental considerations in city logistics serviceWang, KZShao, YMZhou, WHhttp://ir.lzu.edu.cn:80/handle/262010/1981092018-09-28T09:39:53Z2018-09-28T09:39:53Z题名: Matheuristic for a two-echelon capacitated vehicle routing problem with environmental considerations in city logistics service
作者: Wang, KZ; Shao, YM; Zhou, WH
摘要: This paper addresses a two-echelon capacitated vehicle routing problem (2E-CVRP) with environmental considerations (2E-CVRP-E). A new arc-and-route-based mathematical model is constructed to formulate the problem in which the sum of drivers' wage, fuel cost, and handling cost is minimized. A matheuristic based on variable neighborhood search (VNS) and integer programming is designed to solve the 2E-CVRP-E. The integer programming in the matheuristic is used as a post-optimization technique to find better solutions missed by the VNS algorithm or to construct the least-cost first-level routes. To validate its effectiveness, the matheuristic first performs tests on 2E-CVRP instances and improves 13 current best-known solutions out of 234 instances. Then it performs tests on the 2E-CVRP-E instances modified from the 2E-CVRP. For 2E-CVRP-E instances, the total cost of the best solution found by the matheuristic is smaller than that of the best-known 2E-CVRP solution with an average relative gap of 6.37%. Computational results prove that the proposed matheuristic can find high-quality solutions for the 2E-CVRP and the 2E-CVRP-E.2018-09-28T09:39:53ZInfluence of online product presentation on consumers' trust in organic food A mediated moderation modelYue, LQLiu, YMWei, XHhttp://ir.lzu.edu.cn:80/handle/262010/1981082018-09-28T09:39:44Z2018-09-28T09:39:44Z题名: Influence of online product presentation on consumers' trust in organic food A mediated moderation model
作者: Yue, LQ; Liu, YM; Wei, XH
摘要: Purpose - Against the background of industrialisation and modernisation of agriculture, food production issues and environmental hazards have become more and more obvious and consumers are increasingly concerned about food safety and health, which is strengthening demand for organic food. E-commerce provides a new channel for sales. Research on consumer trust in online organic food sales is the basis of network marketing. The paper aims to discuss these issues. Design/methodology/approach - A laboratory experiment was used to empirically test the effects of media richness on consumers' trust and the moderating effect of online review length. A 2 x 2 factorial design (i.e. two types of online product presentation formats (between-subject) x two levels of online review lengths (between-subject)) was used. Findings - Media richness has a significant positive effect on consumers' trust and that this effect is moderated by online review length. Meanwhile, perceived risk conveys the interaction effect of the media richness of online product presentation and online review length to trust. Practical implications - E-commerce websites should aim to promote organic food by using a variety of online product presentation formats and by presenting high quality online reviews in order to reduce consumers' perceived risk and improve their degree of trust when buying online. Originality/value - This paper provides a new insight into consumers' attitude of buying organic food online. The results of the research could provide proposals for promoting organic food sales online.2018-09-28T09:39:44Z